package com.shc.community.controller;

import com.google.code.kaptcha.Producer;
import com.shc.community.entity.ActivationConstant;
import com.shc.community.entity.User;
import com.shc.community.service.UserService;
import com.shc.community.utils.CommunityUtil;
import com.shc.community.utils.RedisKeyUtil;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.CookieValue;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import javax.imageio.ImageIO;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@Controller
public class LoginController {
    private static final Logger logger = LoggerFactory.getLogger(LoginController.class);

    @Autowired
    private Producer kaptchaProducer;

    @Autowired
    private UserService userService;
    @Autowired
    private RedisTemplate redisTemplate;

    @Value("${server.servlet.context-path}")
    private String contextPath;

    @RequestMapping(path = "/register" , method = RequestMethod.GET)
    public String getRegisterPage(){
        return "/site//register";
    }
    @RequestMapping(path = "/login" , method = RequestMethod.GET)
    public String getLoginPage(){
        return "/site//login";
    }
    //注册账号
    @RequestMapping(path = "register" ,method = RequestMethod.POST)
    public String register(Model model , User user){
        Map<String, Object> map = userService.register(user);
        if (map == null || map.isEmpty()){

            model.addAttribute("msg","注册成功！我们已经向您发送了一封激活邮件，请您尽快激活！");
            model.addAttribute("target","/index");
            return "/site//operate-result";
        }else {
            model.addAttribute("usernameMsg",map.get("usernameMsg"));
            model.addAttribute("passwordMsg",map.get("passwordMsg"));
            model.addAttribute("emailMsg",map.get("emailMsg"));
            return "/site//register";
        }

    }
    //激活账号
    @RequestMapping(path = "/activation/{userId}/{code}",method = RequestMethod.GET)
    public String activation(Model model , @PathVariable("userId") int userId , @PathVariable("code") String code){
        int result = userService.activation(userId,code);
        ActivationConstant constant = new ActivationConstant();
        if (result == constant.getACTIVATION_SUCCESS()){
            model.addAttribute("msg","激活成功！您可以正常使用账号！");
            model.addAttribute("target","/login");
        }else if(result == constant.getACTIVATION_REPEAT()){
            model.addAttribute("msg","该账号已经激活！");
            model.addAttribute("target","/index");
        }else {
            model.addAttribute("msg","激活失败！你提供的激活码无效！");
            model.addAttribute("target","/index");
        }
        return "/site//operate-result";
    }
    //生成验证码
    @RequestMapping(path = "/kaptcha" , method = RequestMethod.GET)
    public void getKaptcha(HttpServletResponse response /*, HttpSession session*/){
        //生成验证码
        String text = kaptchaProducer.createText();
        BufferedImage image = kaptchaProducer.createImage(text);
        //将验证码存入session
        //session.setAttribute("kaptcha",text);
        //验证码的归属
        String kaptchaOwner = CommunityUtil.generateUUID();
        Cookie cookie = new Cookie("kaptchaOwner",kaptchaOwner);
        cookie.setMaxAge(60);
        cookie.setPath(contextPath);
        response.addCookie(cookie);
        //将验证码存入redis
        String redisKey = RedisKeyUtil.getKaptcha(kaptchaOwner);
        redisTemplate.opsForValue().set(redisKey,text,60, TimeUnit.SECONDS);

        // 将突图片输出给浏览器
        response.setContentType("image/png");
        try {
            OutputStream os = response.getOutputStream();
            ImageIO.write(image, "png", os);
        } catch (IOException e) {
            logger.error("响应验证码失败:" + e.getMessage());
        }
    }

    @RequestMapping(path = "/login",method = RequestMethod.POST)
    public String login(String username ,String password ,String code , boolean rememberme ,
                        Model model  /*HttpSession session */, HttpServletResponse response, @CookieValue("kaptchaOwner") String kaptchaOwner){
        //检查验证码
//        String kaptcha = (String) session.getAttribute("kaptcha");
        String kaptcha = null;
        if (StringUtils.isNotBlank(kaptchaOwner)){
            String redisKey= RedisKeyUtil.getKaptcha(kaptchaOwner);
            kaptcha = (String) redisTemplate.opsForValue().get(redisKey);
        }
        if (StringUtils.isBlank(kaptcha) || StringUtils.isBlank(code) || !kaptcha.equalsIgnoreCase(code)){
            model.addAttribute("codeMsg","验证码不正确");
            return "/site/login";
        }
        //检查账号、密码
        //设置失效时间
        ActivationConstant constant = new ActivationConstant();
        int expiredSeconds = rememberme ? constant.getREMEMBER_EXPIRED() : constant.getDEFAULT_EXPIRED_SECONDS();
        Map<String , Object> map = userService.login(username,password,expiredSeconds);
        if (map.containsKey("ticket")){
            Cookie cookie = new Cookie("ticket",map.get("ticket").toString());
            cookie.setPath(contextPath);
            cookie.setMaxAge(expiredSeconds);
            response.addCookie(cookie);
            return "redirect:/index";
        }else {
            model.addAttribute("usernameMsg",map.get("usernameMsg"));
            model.addAttribute("passwordMsg",map.get("passwordMsg"));
            model.addAttribute("statusMsg",map.get("statusMsg"));
            return "/site/login";
        }
    }

    @RequestMapping(path = "/logout",method = RequestMethod.GET)
    public String logout(@CookieValue("ticket") String ticket){
        userService.logout(ticket);
        return "redirect:login";
    }
}
